我的reducer函数，如下面的代码所示，被多次调用，导致我的incremention被worng和递增2. 我在strictmode下运行这个，所以我知道它会再次渲染一次以确保安全.但它不应该影响国家/

export const ItemContext = createContext();
export const CartItemContext = createContext();

function reducer(state,action){
  if(action.type === "increment-quantity")
  {
    console.log(state[action.mealIndex][1]);
    state[action.mealIndex][1] +=1 ;
  }
  else if(action.type === "decrement-quantity")
  {

  }
  else if(action.type === "add-meal")
  {
      state = [...state,[action.meal,1]];
  }
  return state;
}


function App() {
  const [orderedMeals,dispatch] = useReducer(reducer,[]);
  const [openModal,setOpenModal] = useState(false);
  const [Quantity,setQuantity] = useState(0);

  const [isFetching,menu,setFetchedData,error]= useFetch(fetchMeals,[]);



  const onAddToCart = (meal) => {
    const mealFound = orderedMeals.find((mealPair) => {return mealPair[0] === meal;})
    const mealIndex = orderedMeals.indexOf(mealFound);
    if(mealFound === undefined)
    {
      dispatch({type:"add-meal",meal:meal})
    }
    else
    {
      dispatch({type:"increment-quantity",mealIndex:mealIndex});
    }
    setQuantity(Quantity+1);
  };

我不知道该怎么解决这个问题，请帮忙，谢谢.